Which statement about President Lyndon Johnson's upbringing is true?

A. He grew up with racist attitudes because his father was a member of the Ku Klux Klan.

B. As a child, he showed no interest in politics and didn't run for office until he was in his 40s.

C. As a young man, he learned about poverty by teaching poor Mexican American children.

D. He was born into a wealthy Dallas family that paid for his education at Harvard.